2827 円周方向に伝搬するガイド波モードの選択的励起(S37-2 非破壊評価とモニタリング(2),S37 非破壊評価とモニタリング)
詳細
This paper describes a simple generation method of a circumferential (C-) guided wave propagating along the circumferential direction of a pipe. A conventional bulk-shear-wave-sensor was used to generate the C-guided wave. The C-guided wave is classified into the C-SH wave and C-Lamb wave, respectively. In the experimental verifications, the C-SH and C-Lamb waves were selectively or simultaneously generated by adequately changing the polarization direction of the bulk-shear-wave-sensor dry-coupled on the outer surface of the pipe. Theoretical explanations of the C-guided wave were briefly.
